18QHTF21-12.7666-OE

Overview

The 18QHTF21-12.7666-OE is a standard crystal oscillator manufactured by Mercury Electronics Ind. Co. Ltd. It operates at a fixed frequency of 12.7666 MHz and utilizes LVCMOS output logic levels. The device is designed for low-voltage applications, requiring a supply voltage of 1.8V. It features an enable/disable control function to manage power consumption. The component is housed in a compact 4-SMD, No Lead package with dimensions of 2.0x1.6mm.

Feature Summary

• Supports LVCMOS output logic for digital interface compatibility
• Includes enable/disable functionality for power management
• Utilizes a small form factor SMD package

Applications

• General purpose clock signal generation
• Digital circuit timing references
• Embedded system clock sources

Procurement Notes

Verify the specific frequency tolerance and load capacitance requirements against your design specifications before procurement. Confirm that the 1.8V supply voltage aligns with your system's power rails. Ensure the PCB footprint matches the 2.0x1.6mm 4-SMD no lead package dimensions to guarantee proper soldering and mechanical stability during assembly processes.

Selection Notes

Select this component when a precise 12.7666 MHz reference is required with low voltage operation. Consider the LVCMOS output compatibility with downstream logic families. Evaluate the need for enable/disable control for power-sensitive designs. Compare package size constraints against available board space to ensure the 2.0x1.6mm footprint fits within the designated area without interfering with adjacent components.

Part Context

This part belongs to the Mercury Electronics XO series, which provides standard frequency oscillators. The manufacturer specializes in quartz crystals and timing devices. This specific model represents a low-profile surface mount option suitable for modern electronics where space efficiency and low power consumption are critical design factors.

Replacement Considerations

Direct substitutes must match the 12.7666 MHz frequency, 1.8V supply, LVCMOS output, and 4-SMD 2.0x1.6mm package. Verify pinout compatibility and electrical characteristics such as phase noise and jitter if specified in original design documentation.